EX Series switches have field-replaceable unit (FRU) optical transceivers to which you can connect fiber-optic cables.
Before you begin connecting a fiber-optic cable to an optical transceiver installed in an EX Series switch, ensure that you have taken the necessary precautions for safe handling of lasers (see Laser and LED Safety Guidelines and Warnings for EX Series Switches).
To connect a fiber-optic cable to an optical transceiver installed in an EX Series switch:
![]() | Warning: Do not look directly into a fiber-optic transceiver or into the ends of fiber-optic cables. Fiber-optic transceivers and fiber-optic cables connected to transceivers emit laser light that can damage your eyes. |
Figure 1: Connecting a Fiber-Optic Cable to an Optical Transceiver Installed in an EX Series Switch

![]() | Caution: Do not bend fiber-optic cables beyond their minimum bend radius. An arc smaller than a few inches in diameter can damage the cables and cause problems that are difficult to diagnose. Do not let fiber-optic cables hang free from the connector. Do not allow fastened loops of cables to dangle, which stresses the cables at the fastening point. |